Means for treating ores.



F. P. ARNOLD & G.- F. WEDEMAN.

Patented July 21, 1914.

3 SHEETS-SHEET 1.

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F. P. ARNOLD ye. P. WEDEMAN.

MEANS FOR TREATING ORES'.

APPLICATION FILED MAY 23. 1914.

Patented July 21, 1914,

3 SHEETSSHEET 2.

wi tmeoaeo UNITED STATES PATENT OFFICE.

FRANKIE. ARNOLD, or CARBONDALE, PENN'SYLVANIA,.A1IDGEORGE F. WEDEMAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

MEANS FOR TREATING ORES.

Specification of Letters Patent.

Patented July 21, 1914.

Application filed May 23,1914. Serial No. 840,535.

To all whomz't may concern:

Be it known that we, FRANK P. ARNOLD and Gnonon F. VVEDEMAN, citizens of the United States, residing, respectively, at Carbondale, in the county of Lackawanna and State of Pennsylvania, and in the city of Washington, Districtof Columbia, have invented certain new and useful Improvements in Means for Treating Ores; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains 'to make and use the same. v

Our invention relates primarily to .the metallurgic art, has especial reference to means for treating ores to relieve them of sulfur, arsenicand other deleterious matter filed February 12th, 1914, Serial Number In the accompanying drawings which form part of this specification:Figure 1 represents an end view part1 in section. Fig. 2 is avertical longitu inal section partly in elevation. Fig.3 is a top plan view partly in section. Fig. 4 is an end view of the carriage supporting the loading and unloading trough. Fig. 5 is an enlarged detail of the outer-end of the loading and unloading trunnion, showing the cover and yoke in closed position, and Fig. 6 is an enlarged transverse section through the same trunnion on line 6 6, Fig. 2.

Reference being had tothe drawings and the designating characters thereon, the numeral 1 indicates the masonry of the furnace construction, 2 is the furnace or primary combustion chamber provided with conventional doors, 3 the ate, bars,4 the bridge wall, '5 the secon ary combustion chamber, in which the ore receptacle or retort 6 is suspended and revolves, 7 means for supplying air for promoting or intensifying combustion in said chamber.

' 8 indicates a system of pipesfor superheating steam to a high degree of temperature, above 1000 F, {for forming a gas.

Steam is supplied from any suitable source, conducted through pipe 9, provided with a valve 10, a steam gage 11, and into the pipes 8 in the secondary combustion chamber. Condensation is discharged through a test pipe 9 provided with a valve 1O.-

p In our application #818,404, we have disclosed how chemicals in solution may be introduced into the steam conducting pipe,

for" this purpose, wejhave provided a reservoir 12, pipe 13,. provided with stop cocks 12', 13, and the pipe 13 connects with the pipe 9, as shown in Fig. 1. The chemicals are carried by the steam 'into the pipes 8,

where they become highly heated and are converted into gas, which commingles with the gaseous product ofthe highly heated anhydrous steam and is conveyed into the receptacle 6, by pipe 14 provided with valve 15, extends through the" trunnion 16- and discharges the gas into the ore in a highly heated condition and commingles therewith as the ore is agitated by the revolutions of the receptacle 6. The pi e 14 is provided with avalve 15 extends t rough astufiing box 17 in, the head 18 of the trunnion 16, and is supported at its inner or discharge end in a d1s'k19 which fits the interior of the trunnion loosely so as not to interfere with the revolution of the receptacle. The pipe 14 where it extends through the disk 19 is centered by a support 20. The loadin' and unloading trunnion 21 is provided with a, cover 22, secured in position by a yoke 23, havin ends '24:, 24L provided with laterally exten ingjpins 25,25 which engage a concentric groove 26, in the'trunnion, and said ends are connected to the body of the yoke by pivots 2'1 27 In the yoke is a nut 28, held in position by an annular member 29 which engages a groove 30 inthe yoke in the nut, and the nut engages a screw threaded boss extension 31'on the outer surface of the cover 22 to force the cover to its seat 32 on the end of the trunnion. I

33 indicates a tubular member extending through the nut 28, the cover 22 and engages a disk 34 at the inner end of said trunnion, for preventing ore entering the trunnion, and also serves as a medium through which tests can be made of the conditions within the receptacle 6. The tube is provided with a removable cap 35, as shown in Figs. 5 and 6. The trunnions are each provided with sprocket wheels 36, 36, or other preferred means,'through which power is transmitted from asuitable motor and a connecting me dium such as a sprocket chain, not shown, for revolving the receptacle and distributing the power to avoid torsion on the points.

37 indicates rollers on which the trunnions are supported and withinv the recep- 'tacle are flights 38 for raising and agitating the ore.

39 indicates a smoke stack of conventional form, provided with a damper 40 operated by a rod 41, as shown in Fig. 2.

Excess of gases from the receptacle 6, which are frequently freighted with values from volatile metals are conducted from the receptacle by a pipe 42 provided with a valve 43 and conveyed to a suitable condenser, not shown, where the values are collected and recovered. This is effected by the proper manipulation of the valves 15 and 43, as is well known to the experienced engineer. The ore is supplied to and removed from the receptacle 6, by a loading and unloading mechanism, preferably such as is shown in Figs. 2, 3 and '4, and comprises an elongated trough or hopper 44, open at its top, and in which'trough is a revoluble screw worm or feed 45. The trough and its attachments are supported on' a lon 'tudinally movable carriage 46, provided with wheels 47 which engage the upper side 48 of a track and wheels 49, which .engage the lower side 50 of the same so adjusted as -to balance the trough and its load of ore to prevent its tipping in operation. The screw 45 is revolved by gearing 51, 52 propelled by power applied to shaft 53 in any well known manner and transmitted to pulley 57 on shaft 57. The carriage 46 supporting the trough 44, is moved forward toward and returned from the trunnion 21 by a belt 54, engaging pulleys 55, 56, 57, 58 and, 59, said belt being driven by a shaft 53,.having oppositely revolving pulleys 61 and. 62, engaged by a clutch 63, to reverse the motion as shownin Figs. 2, 3, and 4. These are well known me- .chanical means for driving machinery and therefore require no further elucidation.

It will be observed by reference to Figs. 2 and 4 that the carriage supporting wheels 47 and 49 engage opposite faces of a Z-rail 64, thereby preventing the possibility of the trough 44 and its load of ore raising the carriage off its supporting rails.

To supply a charge of ore, to the receptacle, the cover 22 is removed from the end of the trunnion 21, the trough or hopper 44 projectedwthrough the trunnion 21 of the receptacle, ore fed to the trough in any suitable manner and is fed forward in the trough a'nd discharged into the receptacle by revolving the Archimedean screw 45 in the proper direction. The trough 44, 1s then withdrawn from the receptacle the cover 22 .cover 22 is removed, the trough 44 projected into the receptacle through trunnion 21, and the treated ore' removed, by reversing the motion of the screw 45 and the ore discharged, through opening 65 in the bottom of the trough 44, shown in Fig. 3 and deposited through a chute 65 in a pit 66, see Fig. 2, or other preferred place of deposit, for subsequent treatment for the recovery of the. values, by vany preferred and suitable means. 2

In the revolution of the receptacle 6, the

' ore is carried up by the flights 38 and falls by gravity into the trough 44, where it is caught by the screw 45 and discharged through opening 65 in the trough 44.

The treatment of the ore' includes heating the ore, expanding live steam, drawing off the water of condensation, superheating the dry steam and passing the gas thus formed through comminuted ore impregnated with neutralizing agents composed of bicarbonate of soda,'caustic potash and sodium chlorid and agitating the ore, for neutralizing the acids contained in the ore, all of which is fully described and claimed in our application for process of treating ores, filed February 12, 1914, Serial No. 818,404.

The chemicals may be supplied to the ore being charged into the receptacle in proper proportions- It is obvious that changes in details of construction may be made without departing from the spirit of our-invention.

Having thus fully described our invention, what we claim as:

1. Apparatus for treating ores comprising I a receptacle revolubly supported on hollow trunnions, means for approximately closing the inner ends of said-trunnions, and one of saidtrunnions having a pipe extending therethrough for supplying ahighly heated gas to the receptacle, and a connection with said pipe for drawing off gases freighted with values from the receptacle.

2. Apparatus for treating ores comprising a receptacle revolubly supported on hollow trunnions, one of said trunnions being pro: vided with a detachable cover, a yoke supporting said cover, and -a pipe extendin through the cover and provided with a disc at its inner end. I

3. Apparatus for treating ores comprising a receptacle revolubly supported on trunnions, means for supplying and removing 5 ing a receptacle revolubl'y supported on -trunnions, one of said trunnions being provided with a detachable cover, in combination with means for supplying and removingore to and from said receptacle through 1 said trunnion.

5. Apparatus for treating ores comprising a receptacle revolubl'y supported on trun-. nions, one of said trunnions having a de-' tachable cover on its outer end; in combi- 15 nation with a longitudinally movable hopper,- and a'carriage for projecting said hop;-

. peer into and withdrawing the hopper from the trunnion. 6. Apparatus for treating ores comprising 29 a receptacle revolubly supported on trunnions, one of said 'trunnions having a de-- tachable cover on its outer end, in combination with a longitudinally movable hopper provided with a'reversible ore feeder and a carriage for supporting said hopper. v I w 7. Apparatus for treating ores comprising a receptacle revolubly supported on trunnions, one of said trnnnions having adetachable cover on its outer end; in combination with a longitudinally movable hopper provided with a reversible ore feeder, a discharge opening in the bottom of said hopper, a receptacle for treated ore, and a movable carriage for supporting the hopper.

In testimony whereof we aflix .our signatures, in'presence of two Witnesses.

FRANK P. ARNOLD. GEORGE F. WEDEMAN.

Witnesses: D. C. REINOHL, I WV. PARKER Ransom... 

